Ordered 4 of the 21" Snapper Ninja blades so I could take advantage of PayPal credit. At less than 25 dollars a blade shipped to the house, a deal for sure.
I have other blades that I keep in rotation to use but the Snapper is tops. I have a Gator blade or whatever it is called and it works but not as well but I do keep it in the mix and sharpened/balanced nonetheless.
Own the same Snapper walk behind self-propelled since 1995 and aside from the usual worn parts that I also replace, engine is still chugging away on the Amsoil synthetic oil that I use. Always starts on the 3rd crank and is ready to run around my lawn.
Snapper blades, love them.